package com.home.java;


public class GraTest {
    public static void main(String[] args) {
        GraphicTools tools = new GraphicTools();

        tools.printRectangle();
        System.out.println("================");

        tools.printRectangle(5,10,"#");
        System.out.println("===============");

        System.out.println(tools.getTriangleArea(3,4));
        System.out.println("边为3，4，5的三角形面积：" + tools.getTriangleArea(3, 4, 5));

    }
}
